1 files changed, 35 insertions, 8 deletions

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 8cf52939d0ab..3af03b19c983 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -38,7 +38,6 @@ typedef struct kmem_cache kmem_cache_t;
 #define SLAB_DEBUG_INITIAL      0x00000200UL    /* Call constructor (as verifier) */
 #define SLAB_RED_ZONE           0x00000400UL    /* Red zone objs in a cache */
 #define SLAB_POISON             0x00000800UL    /* Poison objects */
-#define SLAB_NO_REAP            0x00001000UL    /* never reap from the cache */
 #define SLAB_HWCACHE_ALIGN      0x00002000UL    /* align objs on a h/w cache lines */
 #define SLAB_CACHE_DMA          0x00004000UL    /* use GFP_DMA memory */
 #define SLAB_MUST_HWCACHE_ALIGN 0x00008000UL    /* force alignment */
@@ -47,6 +46,7 @@ typedef struct kmem_cache kmem_cache_t;
                                                    what is reclaimable later*/
 #define SLAB_PANIC              0x00040000UL    /* panic if kmem_cache_create() fails */
 #define SLAB_DESTROY_BY_RCU     0x00080000UL    /* defer freeing pages to RCU */
+#define SLAB_MEM_SPREAD         0x00100000UL    /* Spread some memory over cpuset */
 
 /* flags passed to a constructor func */
 #define SLAB_CTOR_CONSTRUCTOR   0x001UL         /* if not set, then deconstructor */
@@ -64,6 +64,7 @@ extern kmem_cache_t *kmem_cache_create(const char *, size_t, size_t, unsigned lo
 extern int kmem_cache_destroy(kmem_cache_t *);
 extern int kmem_cache_shrink(kmem_cache_t *);
 extern void *kmem_cache_alloc(kmem_cache_t *, gfp_t);
+extern void *kmem_cache_zalloc(struct kmem_cache *, gfp_t);
 extern void kmem_cache_free(kmem_cache_t *, void *);
 extern unsigned int kmem_cache_size(kmem_cache_t *);
 extern const char *kmem_cache_name(kmem_cache_t *);
@@ -77,11 +78,12 @@ struct cache_sizes {
 };
 extern struct cache_sizes malloc_sizes[];
 
-#ifndef CONFIG_DEBUG_SLAB
 extern void *__kmalloc(size_t, gfp_t);
+#ifndef CONFIG_DEBUG_SLAB
+#define ____kmalloc(size, flags) __kmalloc(size, flags)
 #else
 extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
-#define __kmalloc(size, flags) \
+#define ____kmalloc(size, flags) \
     __kmalloc_track_caller(size, flags, __builtin_return_address(0))
 #endif
 
@@ -108,7 +110,30 @@ found:
         return __kmalloc(size, flags);
 }
 
-extern void *kzalloc(size_t, gfp_t);
+extern void *__kzalloc(size_t, gfp_t);
+
+static inline void *kzalloc(size_t size, gfp_t flags)
+{
+        if (__builtin_constant_p(size)) {
+                int i = 0;
+#define CACHE(x) \
+                if (size <= x) \
+                        goto found; \
+                else \
+                        i++;
+#include "kmalloc_sizes.h"
+#undef CACHE
+                {
+                        extern void __you_cannot_kzalloc_that_much(void);
+                        __you_cannot_kzalloc_that_much();
+                }
+found:
+                return kmem_cache_zalloc((flags & GFP_DMA) ?
+                        malloc_sizes[i].cs_dmacachep :
+                        malloc_sizes[i].cs_cachep, flags);
+        }
+        return __kzalloc(size, flags);
+}
 
 /**
  * kcalloc - allocate memory for an array. The memory is set to zero.
@@ -118,7 +143,7 @@ extern void *kzalloc(size_t, gfp_t);
  */
 static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 {
-        if (n != 0 && size > INT_MAX / n)
+        if (n != 0 && size > ULONG_MAX / n)
                 return NULL;
         return kzalloc(n * size, flags);
 }
@@ -155,17 +180,18 @@ struct kmem_cache *kmem_cache_create(const char *c, size_t, size_t,
         void (*)(void *, struct kmem_cache *, unsigned long));
 int kmem_cache_destroy(struct kmem_cache *c);
 void *kmem_cache_alloc(struct kmem_cache *c, gfp_t flags);
+void *kmem_cache_zalloc(struct kmem_cache *, gfp_t);
 void kmem_cache_free(struct kmem_cache *c, void *b);
 const char *kmem_cache_name(struct kmem_cache *);
 void *kmalloc(size_t size, gfp_t flags);
-void *kzalloc(size_t size, gfp_t flags);
+void *__kzalloc(size_t size, gfp_t flags);
 void kfree(const void *m);
 unsigned int ksize(const void *m);
 unsigned int kmem_cache_size(struct kmem_cache *c);
 
 static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 {
-        return kzalloc(n * size, flags);
+        return __kzalloc(n * size, flags);
 }
 
 #define kmem_cache_shrink(d) (0)
@@ -173,6 +199,8 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
 #define kmem_ptr_validate(a, b) (0)
 #define kmem_cache_alloc_node(c, f, n) kmem_cache_alloc(c, f)
 #define kmalloc_node(s, f, n) kmalloc(s, f)
+#define kzalloc(s, f) __kzalloc(s, f)
+#define ____kmalloc kmalloc
 
 #endif /* CONFIG_SLOB */
 
@@ -182,7 +210,6 @@ extern kmem_cache_t	*names_cachep;
 extern kmem_cache_t     *files_cachep;
 extern kmem_cache_t     *filp_cachep;
 extern kmem_cache_t     *fs_cachep;
-extern kmem_cache_t     *signal_cachep;
 extern kmem_cache_t     *sighand_cachep;
 extern kmem_cache_t     *bio_cachep;